package chapter5;

//Using a do-while to process a menu selection
class Menu {
	public static void main(String args[]) throws java.io.IOException {
		char choice;
		do {
			System.out.println("Help on:");
			System.out.println(" 1. if");
			System.out.println(" 2. switch");
			System.out.println(" 3. while");
			System.out.println(" 4. do-while");
			System.out.println(" 5. for\n");
			System.out.println("Choose one:");
			choice = (char) System.in.read();
		} while (choice < '1' || choice > '5');
		System.out.println("\n");
		switch (choice) {
		case '1':
			System.out.println("The if:\n");
			System.out.println("if(condition) statement;");
			System.out.println("else statement;");
			break;
		case '2':
			System.out.println("The switch:\n");
			System.out.println("switch(expression) {");
			System.out.println(" case constant:");
			System.out.println(" statement sequence");
			System.out.println(" break;");
			System.out.println(" // ...");
			System.out.println("}");
			break;
		case '3':
			System.out.println("The while:\n");
			System.out.println("while(condition) statement;");
			break;
		case '4':
			System.out.println("The do-while:\n");
			System.out.println("do {");
			System.out.println(" statement;");
			System.out.println("} while (condition);");
			break;
		case '5':
			System.out.println("The for:\n");
			System.out.print("for(init; condition; iteration)");
			System.out.println(" statement;");
			break;
		}
	}
}